Aircraft Incident/Accident Report

Glade Park, Colorado 81523Friday, January 7, 1983 17:13 MST

THE ACFT LANDING GEAR COLLAPSED DURING A FORCED LANDING AFTER AN ENGINE FAILURE. THE PILOT SAID HE LOST MANIFOLD AND OILPRESSURE AND TURNED BACK TOWARD GRAND JUNCTION WHEN THE ENGINE BEGAN MAKING LOUD NOISES. A LANDING WAS MADE ON A SLIPPERY ROAD AND THE ACFT SKIDDED AND COLLAPSED THE GEAR. TELEDYNE-CONTINENTAL DECIDED THAT A THRUST WASHER HALF HAD BEEN LEFT OUT OF THE ENGINE DURING MANUFACTURE. THIS ALLOWED EXCESSIVE MOVEMENT OF THE CRANKSHAFT WHICH SIDE-LOADED AND FAILED #2 CONNECTING ROD AND DAMAGED #1 ROD.